Nortel Networks 9150 - Manual (Page 364)

334 Remote Gateway 9150 Installation and Administration Guide
Administration Standard 3.1
PSTN Error Statistics field descriptions
The following table describes the information on the PSTN Error Statistics
screen:
Statistic Description
Channel Number Identifies the channel that the statistics on that line
apply to.
Receive Buffer
Allocation Failures Identifies the number of times since the statistics were
last reset that there was an error in the allocation of a
packet to the receive buffer.
Frame Length
Violations Identifies the number of times since the statistics were
last reset that a frame contained too many packets.
CRC Errors Identifies the number of times since the statistics were
last reset that the cyclic redundancy check (CRC) bits
did not match.
The CRC errors that Trunk Protocol reports on the
Remote Gateway 9100 Series product are check
performed end-to-end at the High-level Data Link
Control (HDLC) framing level. This check includes the
ISDN framing errors as well as PSTN spans and
clocking issues. The CRC error count does not always
indicate that there are CRC errors on the physical line
between the Remote Gateway 9150 unit and the CO,
or the host PBX and the CO. However, the CRC error
count is a good indication that you need to investigate
the physical line.
Unknown Receive
Errors Identifies the number of times since the statistics were
last reset that a receive error that is not otherwise
classified in this display occurred.
ITE Frame Length
Violations Identifies the number of times since the statistics were
last reset that the ITE received an over-length frame.
ITE Transmitter
Underruns Identifies the number of times since the statistics were
last reset that the ITE transmitter contained underruns.
ITE Receiver Busy
Errors Identifies the number of times since the statistics were
last reset that the ITE received busy errors.